122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2011, Blender Foundation.
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*/
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#include <cmath>
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#include "COM_WrapOperation.h"
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namespace blender::compositor {
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WrapOperation::WrapOperation(DataType datatype) : ReadBufferOperation(datatype)
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{
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this->m_wrappingType = CMP_NODE_WRAP_NONE;
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}
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inline float WrapOperation::getWrappedOriginalXPos(float x)
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{
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if (this->getWidth() == 0) {
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return 0;
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}
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while (x < 0) {
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x += this->m_width;
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}
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return fmodf(x, this->getWidth());
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}
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inline float WrapOperation::getWrappedOriginalYPos(float y)
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{
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if (this->getHeight() == 0) {
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return 0;
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}
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while (y < 0) {
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y += this->m_height;
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}
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return fmodf(y, this->getHeight());
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}
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void WrapOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
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{
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float nx, ny;
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nx = x;
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ny = y;
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MemoryBufferExtend extend_x = MemoryBufferExtend::Clip, extend_y = MemoryBufferExtend::Clip;
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switch (m_wrappingType) {
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case CMP_NODE_WRAP_NONE:
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// Intentionally empty, originalXPos and originalYPos have been set before
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break;
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case CMP_NODE_WRAP_X:
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// wrap only on the x-axis
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nx = this->getWrappedOriginalXPos(x);
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extend_x = MemoryBufferExtend::Repeat;
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break;
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case CMP_NODE_WRAP_Y:
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// wrap only on the y-axis
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ny = this->getWrappedOriginalYPos(y);
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extend_y = MemoryBufferExtend::Repeat;
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break;
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case CMP_NODE_WRAP_XY:
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// wrap on both
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nx = this->getWrappedOriginalXPos(x);
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ny = this->getWrappedOriginalYPos(y);
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extend_x = MemoryBufferExtend::Repeat;
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extend_y = MemoryBufferExtend::Repeat;
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break;
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}
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executePixelExtend(output, nx, ny, sampler, extend_x, extend_y);
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}
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bool WrapOperation::determineDependingAreaOfInterest(rcti *input,
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ReadBufferOperation *readOperation,
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rcti *output)
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{
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rcti newInput;
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newInput.xmin = input->xmin;
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newInput.xmax = input->xmax;
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newInput.ymin = input->ymin;
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newInput.ymax = input->ymax;
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if (ELEM(m_wrappingType, CMP_NODE_WRAP_X, CMP_NODE_WRAP_XY)) {
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// wrap only on the x-axis if tile is wrapping
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newInput.xmin = getWrappedOriginalXPos(input->xmin);
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newInput.xmax = roundf(getWrappedOriginalXPos(input->xmax));
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if (newInput.xmin >= newInput.xmax) {
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newInput.xmin = 0;
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newInput.xmax = this->getWidth();
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}
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}
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if (ELEM(m_wrappingType, CMP_NODE_WRAP_Y, CMP_NODE_WRAP_XY)) {
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// wrap only on the y-axis if tile is wrapping
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newInput.ymin = getWrappedOriginalYPos(input->ymin);
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newInput.ymax = roundf(getWrappedOriginalYPos(input->ymax));
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if (newInput.ymin >= newInput.ymax) {
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newInput.ymin = 0;
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newInput.ymax = this->getHeight();
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}
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}
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return ReadBufferOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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void WrapOperation::setWrapping(int wrapping_type)
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{
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m_wrappingType = wrapping_type;
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}
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} // namespace blender::compositor
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